I hadn't really explored this idea in depth for a simple reason: I only have one blog. However, personally, I don't see much point in posting the same content on multiple social media platforms. For example, I don't share my personal photos on both Instagram and Facebook; it's one or the other, and to be honest, currently it's neither. I'm not talking about a legitime issue, it just doesn't make sense to me. It would even be a matter of personal opinion.

In my current role as a curator, I don't like it when I find an identical post on another social network. It's a personal thing, but at least it aligns with the platform's policy, and I'm grateful I noticed it before voting. Even so, I don't doubt that some might have slipped through the cracks during the verification process.

Exemple of other difficulties: depending on the plagiarism detector you use, you can get different results when AI is suspected.

I learned that Steemit considers using your content on another network plagiarism when I verified a story written by a user. My duty was to let her know, since it wasn't exclusive to this platform. Now, calling it plagiarism seems a serious accusation, since the texts are her own work. She removed the posts immediately out of respect for the "steemexclusive" tag.

There are thousands of things that I would consider at least non-original content, used by many users across the web, most of the time without attribution; in fact, the origin gets lost along the way.

Regarding diaries, (I hope you understand what I mean) I once told a colleague that I thought they were one of the most original things on the platform, simply because no two days can be the same unless you have a very routine life and flat emotions about what happens in your life... and in my experience, it seems to me that some people create a story from photos that don't necessarily belong to the same day.

There is a lot to discuss and it is important to clearly differentiate between the terms non-exclusive and plagiarized, as well as the criteria for rewarding it. Given the different points of view/interpretations, it is best to have a single guideline and clear rules.